Melimoyu, Stratovolcano in Aysén Region, Chile

Cerro Melimoyu is a stratovolcano in the Aysen Region with two nested calderas of different sizes at its summit. The crater landscape features varied geological formations and views across the surrounding area.

The volcano was first documented in writing by pilot Jose de Moraleda y Montero in 1752. Later expeditions, including those led by Captain Robert FitzRoy, expanded understanding of this mountain's location and character.

The name Melimoyu comes from Mapudungun: meli means "four" and moyu means "breasts", after the four summits that rise above the surrounding land. The volcano gives its name to Melimoyu National Park, created by the Chilean government in 2018 to protect the volcano, its glaciers and the surrounding flora and fauna, partly with land donated by foundations linked to conservationist Kristine Tompkins.

Access is mainly through Puerto Puyuhuapi, though infrastructure in the surrounding area remains limited. Visitors should prepare for basic facilities and check local conditions before arriving.

The ice cap shrank by about 0.61 square kilometres per year between 1970 and 2017, leaving 55.59 square kilometres of ice and exposing a proglacial lake at the foot of the retreating outlet glaciers. Clockwise from the north, the glaciers are named Correntoso, Melimoyu Este, Marchant, Melimoyu Sur, Melimoyu Oeste, Santo Domingo and Anihue.